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MSO to PSM: distance & flight time
Missoula (Missoula International Airport) → Portsmouth (Portsmouth International at Pease Airport)
2,103 mi
3,385 km · 1,828 nm
4h 35m
estimated nonstop flight time
+2h
time difference · heading east
See live MSO→PSM fares Phone-only fares on this route — call free
Flight time details
2,103 miles nonstop takes roughly 4h 35m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time gain when reading arrival times on your ticket.
The two airports
- MSO — Missoula International Airport · Missoula, United States
- PSM — Portsmouth International at Pease Airport · Portsmouth, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near MSO
- FCA · Glacier Park International Airport97 mi away
- BTM · Bert Mooney Airport101 mi away
- HLN · Helena Regional Airport102 mi away
- SMN · Lemhi County Airport124 mi away
Near PSM
- BOS · General Edward Lawrence Logan International Airport50 mi away
- LWM · Lawrence Municipal Airport29 mi away
- MHT · Manchester-Boston Regional Airport33 mi away
- BVY · Beverly Municipal Airport34 mi away
Frequently asked questions
How far is MSO from PSM?
The flight distance from Missoula (MSO) to Portsmouth (PSM) is 2,103 miles (3,385 km, 1,828 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from MSO to PSM?
A nonstop flight takes about 4h 35m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Missoula and Portsmouth?
Portsmouth is 2 hours ahead of Missoula.
What is the cheapest way to fly from MSO to PSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on MSO–PSM that never appear on search engines, with no booking fees.